One of the major concerns for the Luke Bryan concert was how much trash would be left in the tailgaters area; would it be like Kenny Chesney aftermath. Pittsburgh's Action News 4's Brian Caldwell captures what was left behind.

Country music artist Dierks Bentley performed right before Luke Bryan on Saturday. Pittsburgh's Action News 4 was front and center to catch his performance. Catch one special fan get a special surprise on stage.

The city intends to put promoters on notice that the city will try to hold them responsible, "to make sure that they hire the private staff to assure that their event is safe and clean," said Acklin. "The taxpayers of Pittsburgh will not be held with the cost of any event that is poorly managed."

Public safety officials broke up 15 fights, ferried 34 people to hospitals and responded to at least 150 emergency calls related to the Bryan concert, Peduto said Sunday, calling for event organizers to pick up part of the tab.

About 50,000 fans descended on Heinz Field for Saturday night's show by the country superstar. Tailgaters arrived up to nine hours before the event, leaving behind mounds of trash in parking lots, surrounding neighborhoods and in the Allegheny River, Peduto said.

At least seven people were arrested, and public works employees were still cleaning up Sunday morning, Peduto said in a statement.

"The continued trashing of our city has to stop," Peduto said. "There is no reason ... (for taxpayers) to bear the burden for outsized amounts of garbage removal and public safety response."

After seeing video of the latest problems, some Pittsburghers are saying they agree.

"I don't want to pay for other people's poor behavior and inability to clean up after themselves," said Robert Wierzbowski, of Friendship.

"The concert should take responsibility for it because they're responsible for the people that go there as well and cleaning up for it as well as setting up for it," said Oksana Pfister of Crafton.

There should be "fees they can assess beforehand to compensate for the cleanup," city resident Rick Soukup said. "But going after them after the fact is always troublesome."

The city will also seek to limit the time for parking-lot tailgating and limit boating access to concert events.

Big concert events bring Pittsburgh more than public safety calls and trash-filled lots. The tourism organization Visit Pittsburgh says these events also bring cash for the local economy.

"We do see gigantic windfalls for those weekends, in terms of hotel stays, restaurants, any other spending that is associated with that kind of thing, so we'd certainly want to leave the door open into the future for anything that would come in," said Craig Davis, Visit Pittsburgh president & CEO.

"These big-ticket items, these special events and concerts are an economic generator for the city, but there has to be balance," Acklin said.

"The next big concert in July -- our intention is to have these new policies in place to make sure we have more of that responsibility put on the people that can control that risk," said Acklin.

Representatives of Live Nation, the promoter of the Bryan concert, did not respond to requests for comment.

The Steelers organization signed the event contract with Live Nation and won't comment on the mayor's idea. The team's stadium manager says the Steelers will continue to work with the city to improve the efficiency of hosting large events.

Some are skeptical of cost recovery plans.

"I don't think that's ever going to happen because the city makes a lot of money off of those concerts. And what do they expect? They've got drunk thousands of people, they're going to throw their trash wherever," said Chancelor Humphrey of Aliquippa.

"It doesn't get at the deeper issue of why are people making such a mess of our city when they come here," said Amy Parker of the South Side.

The aftermath appeared less overwhelming than the mess left after a Kenny Chesney country concert last year, when crews hauled off more than 45,000 pounds of garbage, according to public works Director Mike Gable. More than 70 arrests were made related to that show.

While acknowledging the economic benefits of big concerts, the mayor said the city will begin billing promoters and related private parties for public money spent on cleanup and safety efforts. Representatives for the stadium's parking lot management company and Bryan's promoter were not available to comment.

Tailgaters on Saturday were given trash and recycling containers, which appeared to help.

"It's definitely cleaner than it was last year. People aren't just throwing their trash on the streets. They're using the bins and bags," Ryan Callahan, 25, of Delmont, told the Tribune Review on Saturday.

One of the major concerns for the Luke Bryan concert was how much trash would be left in the tailgaters area; would it be like Kenny Chesney aftermath. Pittsburgh's Action News 4's Brian Caldwell captures what was left behind.

ALL FREE IN YOUR APPLE APP STORE. ALL RIGHT, ON TO THIS NOW. ENOUGH IS ENOUGH. THE PEDUTO ADMINISTRATION DEMANDING TAILGATERS STOP TRASHING OUR CITY. THIS IS THE BIG CLEANUP AFTER SATURDAY'S LUKE BRYAN CONCERT AT HEINZ FIELD. LOOK AT THE GARBAGE. BOB MAYO JOINS US, SOUNDS LIKE CITY LEADERS ARE REALLY CRACKING DOWN. Reporter: WELL, THEIR INTENTION, WHAT REMAINS TO BE SEEN, WILL THEY FACE A FIGHT FROM THE PROMOTERS, WHO THEY SAY SHOULD BEAR PART OF THE RESPONSIBILITY AND A BIG CHUNK OF THE COST OF THE PUBLIC FALLOUT OF THE EVENTS THEY BRING TO TOWN. THE BURDEN OF PAYING FOR CLEANUP OF POST-EVENT MESSES LIKE THIS SHOULD NOT FALL ON PITTSBURGH TAXPAYERS SAYS MAYOR PEDUTO'S ADMINISTRATION. THE JUDGMENT OF THE MAYOR IS THIS KIND OF BEHAVIOR THAT COST THE CITY TENS OF THOUSANDS OF DOLLARS IS NOT ACCEPTABLE. Reporter: THE MAYOR'S CHIEF OF STAFF SAYS THE CITY WILL PREPARE AND SEND A BILL TO THE PROMOTER OF THE LUKE BRYAN CONCERT AT HEINZ FIELD AND LOOK TO SET UP A NEW PROCESS TO HOLD ACCOUNTABLE THOSE WHO STAGE FUTURE EVENTS. IMAGES LIKE THESE BRING SUPPORT FOR THAT IDEA FROM SOME PITTSBURGHERS. THE CONCERT SHOULD TAKE RESPONSIBILITY, BECAUSE THEY ARE RESPONSIBLE FOR THE PEOPLE THAT GO THERE, CLEANING UP FOR IT, AS WELL AS SETTING UP FOR IT. IF THERE'S FEES THEY CAN ASSESS BEFOREHAND TO COMPENSATE FOR THE CLEANUP THAT YOU CAN JUST EXPECT AFTER THE FACT, BUT GOING AFTER THEM AFTER THE FACT IS ALWAYS TROUBLESOME. Reporter: THE CITY WILL ALSO LOOK AT WAYS TO CUT DOWN ON THE LENGTH OF TAILGATING AND GATHERINGS OF BOATS ON THE RIVERS BEFORE EVENTS. THE NEXT BIG CONCERT AT HEINZ FIELD IS IN JULY, OUR INTENTION IS TO HAVE THESE NEW POLICIES IN PLACE TO MAKE SURE WE HAVE MORE OF THAT RESPONSIBILITY PUT ON THE PEOPLE THAT CAN CONTROL THAT RISK. Reporter: THE STEELERS WON'T COMMENT ON THE MAYOR'S IDEA, BUT THE TEAM'S STADIUM MANAGER SAYS THEY'LL CONTINUE TO WORK WITH THE CITY TO IMPROVE THE EFFICIENCY OF HOSTING LARGE EVENTS. GET OUT THE DEEPER ISSUE OF WHY ARE PEOPLE MAKING SUCH A MESS OF OUR CITY WHEN THEY COME HERE. SO FAR, NO RESPONSE FROM THE PROMOTER OF THIS PAST WEEKEND'S EVENT, TO THE PLANS ANNOUNCED BY THE MAYOR'S PEOPLE. REPORTING LIVE, BOB MAYO, PITTSBURGH ACTION NEWS 4. OKAY, BOB. TODAY, POLICE RELEASED A COMPLETE REPORT OF THE LUKE BRYAN CONCERT. 19 PEOPLE WERE ARRESTED FOR FIGHTING AND OTHER CRIMES. 37 CITATIONS WERE HANDED OUT FOR THINGS LIKE SCALPING, PUBLIC URIN URINATION, AND DISORDERLY CONDUCT.